Home / 77,282.20-106,650.78-43,290.40

Finding the Fourth Proportional to 77,282.20, 106,650.78 and 43,290.40

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Solution

The fourth proportional to 77,282.20, 106,650.78 and 43,290.40 is: 59,741.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,282.20 : 106,650.78 = 43,290.40 : x
  2. Step 2: Convert to fraction form
    77,282.20/106,650.78 = 43,290.40/x
  3. Step 3: Cross multiply
    77,282.20x = 106,650.78 × 43,290.40
  4. Step 4: Simplify right side
    77,282.20x = 4,616,954,926.51
  5. Step 5: Solve for x
    x = 4,616,954,926.51/77,282.20
  6. Step 6: Final answer
    x = 59,741.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.